board/freescale/common/ft_board.c

   1 /*
   2  * Copyright 2004 Freescale Semiconductor.
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #include <common.h>
  24 #include <libfdt.h>
  25 #include <fdt_support.h>
  26 #include "cadmus.h"
  27
  28 #if defined(CONFIG_OF_BOARD_SETUP)
  29 static void cds_pci_fixup(void *blob)
  30 {
  31         int node, tmp[2];
  32         const char *path;
  33         int len, slot, i;
  34         u32 *map = NULL;
  35
  36         node = fdt_path_offset(blob, "/aliases");
  37         tmp[0] = 0;
  38         if (node >= 0) {
  39                 path = fdt_getprop(blob, node, "pci0", NULL);
  40                 if (path) {
  41                         node = fdt_path_offset(blob, path);
  42                         if (node >= 0) {
  43                                 map = fdt_getprop_w(blob, node, "interrupt-map", &len);
  44                         }
  45                 }
  46         }
  47
  48         if (map) {
  49                 len /= sizeof(u32);
  50
  51                 slot = get_pci_slot();
  52
  53                 for (i=0;i<len;i+=7) {
  54                         /* We rotate the interrupt pins so that the mapping
  55                          * changes depending on the slot the carrier card is in.
  56                          */
  57                         map[3] = ((map[3] + slot - 2) % 4) + 1;
  58                         map+=7;
  59                 }
  60         }
  61 }
  62
  63 void
  64 ft_board_setup(void *blob, bd_t *bd)
  65 {
  66         ft_cpu_setup(blob, bd);
  67 #ifdef CONFIG_PCI
  68         ft_pci_setup(blob, bd);
  69         cds_pci_fixup(blob);
  70 #endif
  71 }
  72 #endif